.gitignore

*.pyc

README.md

An example of hotcode reload in Python. I used this to reload a class on an instance in development without having to recreate the instance.

greeting.py

class Hello(object):
    def __init__(self, name):
        self.name = name

    def greet(self):
        print "Hello, " + self.name

main.py

import greeting

def rewrite():
    """Simulate editing a file"""
    source = open("greeting.py", "rb").read()
    source = source.replace('"Hello', '"Hola')
    open("greeting.py", "wb").write(source)

x = greeting.Hello("Eric")
x.greet()

rewrite()
reload(greeting)

x.__class__ = greeting.Hello
x.greet()

run.sh

#!/usr/bin/env bash
rm -f *.pyc
python main.py
git checkout greeting.py